chore(h2): fix minimum h2 version

Author: seanmonstar

Cargo.toml

@@ -24,7 +24,7 @@ futures = "0.1.21"
 futures-cpupool = { version = "0.1.6", optional = true }
 http = "0.1.7"
 httparse = "1.0"
-h2 = "0.1.5"
+h2 = "0.1.10"
 iovec = "0.1"
 itoa = "0.4.1"
 log = "0.4"